深圳市富满电子有限公司

SHENZHEN FUMAN ELECTRONICS CO., LTD.

16 Bit Digital to Analog Converter

第 3 页 共 9 页

FUNCTION DESCRIPTION

The serial bus input data format of SC8211 is Japanese or called LSBJ (Least significant bit justified) format.

Each valid DIN data will be shifted to the input register in the rising edge of the BCK, only the first 16 bit data

(from MSB) is valid if the input data length is more than 16 bit, other data bit will be truncated. The clock

frequency of the BCK could run up to 20MHz and supported to 8X over-sampling in 48KHz WS clock rate. Both

left and right data words are time multiplexed. Please refer to the diagrams for timing and input signal formats.

1

2

3

4

5

6

A

B

C

D

6

5

4

3

2

1

D

C

B

A

Title

Num ber

Revision

Size

B

Date:

14-Feb-2006

Sheet

of

File:

WS

BCK

DIN

RIGHTCH

LEFTCH

LSB

Figure 1.Japanese Input Signal Format

MSB

LSB

WS

BCK

DIN

Figure 2. Timing and Input Signal Formats

The DIN data must be the 2’s complementary format and the MSB (Most significant bit) must be the first.

When the word select (WS) clock in the Low level, the DIN data will be shifted to the right input register. Likewise,

the DIN data will be shifted to the left input register when WS clock in the high level. The buffered DIN data then

feeding to the DAC after both input register are all settled down, this can eliminated the phase shift happened

between two channel output. DAC output is generated by a 16 bit R-2R resistor ladder network. This signal is

driven to the Right/ Left Channel (RCH/LCH) via the buffer operational amplifier.

ABSOLUTE MAXIMUM RATINGS

Parameter

Symbol

Rating

Unit

Power supply voltage

-0.3~7.0

V

Input voltage

V

Operating temperature

Topr

-40~+85

℃

Storage temperature

Tstg

-65~+150

℃